Фатальные ошибки в логе OpenCart

[seoart]

В логе постоянно появляются ошибки. Еще часто, страница сайта не загружается, а просто белый экран. В чем может быть проблема? Спасибо.
 

[17-Apr-2015 10:50:28 Europe/Minsk] PHP Fatal error:  Class 'DB' not found in /home/topstand/public_html/index.php on line 44

[17-Apr-2015 10:53:26 Europe/Minsk] PHP Fatal error:  Class 'Response' not found in /home/topstand/public_html/index.php on line 124

[17-Apr-2015 11:16:20 Europe/Minsk] PHP Fatal error:  Class 'Modelcatalogmanufacturer' not found in /home/topstand/public_html/vqmod/vqcache/vq2-system_engine_loader.php on line 46

[17-Apr-2015 11:25:47 Europe/Minsk] PHP Fatal error:  Class 'Loader' not found in /home/topstand/public_html/index.php on line 36

[17-Apr-2015 11:25:48 Europe/Minsk] PHP Parse error:  syntax error, unexpected end of file, expecting ')' in /home/topstand/public_html/vqmod/vqcache/vq2-catalog_model_catalog_product.php on line 112

[17-Apr-2015 11:29:59 Europe/Minsk] PHP Fatal error:  Class 'Session' not found in /home/topstand/public_html/index.php on line 134

[17-Apr-2015 11:30:27 Europe/Minsk] PHP Fatal error:  Class 'Config' not found in /home/topstand/public_html/index.php on line 40

[17-Apr-2015 11:30:41 Europe/Minsk] PHP Fatal error:  Class 'Session' not found in /home/topstand/public_html/index.php on line 134

[17-Apr-2015 11:31:00 Europe/Minsk] PHP Fatal error:  Class 'Config' not found in /home/topstand/public_html/index.php on line 40

[17-Apr-2015 11:31:21 Europe/Minsk] PHP Fatal error:  Class 'Config' not found in /home/topstand/public_html/index.php on line 40

[17-Apr-2015 11:31:21 Europe/Minsk] PHP Fatal error:  Class 'Document' not found in /home/topstand/public_html/index.php on line 191

[17-Apr-2015 11:32:36 Europe/Minsk] PHP Fatal error:  Class 'Loader' not found in /home/topstand/public_html/index.php on line 36

[17-Apr-2015 11:32:36 Europe/Minsk] PHP Fatal error:  Class 'Document' not found in /home/topstand/public_html/index.php on line 191

[17-Apr-2015 11:34:12 Europe/Minsk] PHP Fatal error:  Class 'Document' not found in /home/topstand/public_html/index.php on line 191

[17-Apr-2015 11:43:28 Europe/Minsk] PHP Fatal error:  Class 'Response' not found in /home/topstand/public_html/index.php on line 124

[17-Apr-2015 11:43:28 Europe/Minsk] PHP Fatal error:  Class 'Document' not found in /home/topstand/public_html/index.php on line 191

[17-Apr-2015 11:45:53 Europe/Minsk] PHP Fatal error:  Class 'Response' not found in /home/topstand/public_html/index.php on line 124

[17-Apr-2015 11:47:54 Europe/Minsk] PHP Fatal error:  Class 'Loader' not found in /home/topstand/public_html/index.php on line 36

[17-Apr-2015 11:47:54 Europe/Minsk] PHP Fatal error:  Class 'Document' not found in /home/topstand/public_html/index.php on line 191

[17-Apr-2015 11:48:01 Europe/Minsk] PHP Fatal error:  Class 'DB' not found in /home/topstand/public_html/index.php on line 44

[17-Apr-2015 11:48:01 Europe/Minsk] PHP Fatal error:  Class 'Language' not found in /home/topstand/public_html/index.php on line 186

[17-Apr-2015 11:50:32 Europe/Minsk] PHP Fatal error:  Class 'Controllercommoncolumnleft' not found in /home/topstand/public_html/vqmod/vqcache/vq2-system_engine_controller.php on line 41

[17-Apr-2015 11:54:09 Europe/Minsk] PHP Fatal error:  Class 'Loader' not found in /home/topstand/public_html/index.php on line 36

[17-Apr-2015 11:58:50 Europe/Minsk] PHP Parse error:  syntax error, unexpected end of file in /home/topstand/public_html/vqmod/vqcache/vq2-catalog_model_catalog_product.php on line 341

[17-Apr-2015 12:00:12 Europe/Minsk] PHP Fatal error:  Class 'DB' not found in /home/topstand/public_html/index.php on line 44

[Zeobr]

 проблемы хостинге. может не хватает памяти, может не хватает количества открытых файлов в конфиге, может кончилось место.

Как бы не так!

[chukcha]

ага, а как? поведайте нам неразумным....